使用內建因子時，出現以下 error message: ValueError: Bin edges must be unique: array([nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan]). You can drop duplicate edges by setting the 'duplicates' kwarg

[tej87681088]

將run_pipeline的start_date至少設定為bundle的start_date+1交易日

例如：

• bundle起訖為： os.environ['mdate'] = '2021-01-04 2023-05-19'
• run_pipeline的start_date請設定>='2021-01-05'

範例錯誤和解決：
https://github.com/tejtw/TQuant-Lab/blob/a5afecf9db5a607a36cfd088474a296b8c7bb7e9/Problem/QA_%E5%9B%A0%E5%AD%90%E5%87%BA%E7%8F%BE%20Bin%20edges%20must%20be%20unique%20array%20nan%20%E5%95%8F%E9%A1%8C.ipynb

See also：
issue #22